Vibhor Gupta (7 results)
Functional Relevance Of Human Pyruvate Kinase-M2 Mutations: Pkm2 Mutations From Bloom Syndrome Patients
Gupta, Vibhor; Bamezai, Rameshwar N.K.; Gupta, Vibhor; Bamezai, Rameshwar N.K.
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Taschenbuch. Condition: Neu. Functional Relevance of Human Pyruvate Kinase-M2 Mutations | PKM2 Mutations from Bloom Syndrome patients | Vibhor Gupta (u. a.) | Taschenbuch | 100 S. | Englisch | 2012 | LAP LAMBERT Academic Publishing | EAN 9783848408962 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 2…2848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.
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Language: English
Published by LAP LAMBERT Academic Publishing Feb 2012, 2012
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Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Out of 4 isoforms of Pyruvate kinase; a glycolytic enzyme, M2 is a prototype isoform expressed in embryonic and adult dividing cells. For the first time, we reported two missense mutations in Pyruvate kinase M2 isozyme (H391Y and K4…22R) from the cells of Bloom syndrome patients, prone to develop cancer. Results showed that despite the presence of mutations in the inter-subunit contact domain, the K422R and H391Y mutant proteins maintained their homotetrameric structure, similar to the wild-type protein, but showed a loss of activity by 75 and 20%, respectively. Interestingly, H391Y showed a 6-fold increase in affinity for its substrate phosphoenolpyruvate and behaved like a non-allosteric protein with compromised cooperative binding. The co-expression of homotetrameric wild type and mutant PKM2 in the cellular milieu resulted in the interaction between the two at the monomer level, which was substantiated further by in vitro experiments. Interestingly, in a unique observation, hetero-oligomeric populations of PKM2 with an altered activity and affinity led to an increased rate of polyploidy i.e genomic instability. 100 pp. Englisch.
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Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Gupta VibhorDr. Gupta graduated as a Gold Medalist from Himachal Pradesh University, in year 2005 and joined Jawaharlal Nehru University for his PhD. He was awarded with the degree of doctor of philosop…hy in year 2010. At the time of.
Language: English
Published by LAP LAMBERT Academic Publishing Feb 2012, 2012
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Taschenbuch. Condition: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Out of 4 isoforms of Pyruvate kinase; a glycolytic enzyme, M2 is a prototype isoform expressed in embryonic and adult dividing cells. For the first time, we reported two missense mutations in Pyruvate kinase M2 isozyme (H391Y and K422R)… from the cells of Bloom syndrome patients, prone to develop cancer. Results showed that despite the presence of mutations in the inter-subunit contact domain, the K422R and H391Y mutant proteins maintained their homotetrameric structure, similar to the wild-type protein, but showed a loss of activity by 75 and 20%, respectively. Interestingly, H391Y showed a 6-fold increase in affinity for its substrate phosphoenolpyruvate and behaved like a non-allosteric protein with compromised cooperative binding. The co-expression of homotetrameric wild type and mutant PKM2 in the cellular milieu resulted in the interaction between the two at the monomer level, which was substantiated further by in vitro experiments. Interestingly, in a unique observation, hetero-oligomeric populations of PKM2 with an altered activity and affinity led to an increased rate of polyploidy i.e genomic instability.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 100 pp. Englisch.
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Seller: AHA-BUCH GmbH, Einbeck, GermanyAHA-BUCH GmbH
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Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Out of 4 isoforms of Pyruvate kinase; a glycolytic enzyme, M2 is a prototype isoform expressed in embryonic and adult dividing cells. For the first time, we reported two missense mutations in Pyruvate kinase M2 isozyme (H391Y and K422R)…from the cells of Bloom syndrome patients, prone to develop cancer. Results showed that despite the presence of mutations in the inter-subunit contact domain, the K422R and H391Y mutant proteins maintained their homotetrameric structure, similar to the wild-type protein, but showed a loss of activity by 75 and 20%, respectively. Interestingly, H391Y showed a 6-fold increase in affinity for its substrate phosphoenolpyruvate and behaved like a non-allosteric protein with compromised cooperative binding. The co-expression of homotetrameric wild type and mutant PKM2 in the cellular milieu resulted in the interaction between the two at the monomer level, which was substantiated further by in vitro experiments. Interestingly, in a unique observation, hetero-oligomeric populations of PKM2 with an altered activity and affinity led to an increased rate of polyploidy i.e genomic instability.
